本文提出一個新的四輸入一輸出電壓模式泛用二階濾波器電路，這個提出的電路使用了兩個電流回授放大器、兩個電容器與三個電阻器。它能實現所有的濾波功能(低通、帶通、高通、帶阻及全通濾波器)而不需改變電路架構。它在合成各種濾波功能時都不需額外外接一個反向放大器。

The paper presents a new voltage-mode universal biquadratic filter with four input terminals and one output terminal using two current feedback amplifiers (CFAs), two capacitors and three resistors. All the standard filter functions, that is, lowpass, bandpass, highpass, notch and allpass filters can be realized without changing the circuit topology. The circuit needs not an inverting type voltage input signal in all filters realizations.